Acquisitions and Dispositions (Details) (Odyssey Health Care Inc [Member], USD $) In Thousands, unless otherwise specified	Aug. 17, 2010
Odyssey Health Care Inc [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash	$ 148,269
Accounts receivable	123,281
Deferred tax assets	11,390
Fixed assets, net	18,119
Identifiable intangible assets	126,500
Goodwill	780,986
Other assets	18,354
Total assets aquired	1,226,899
Accounts payable and accrued liabilities	(112,228)
Short-term and long-term debt	(108,822)
Deferred tax liabilities	(25,246)
Total liabilities assumed	(246,296)
Noncontrolling interest	(2,410)
Net assets acquired	$ 978,193